Modifier and Type	Class and Description
public static class	GestureDetector.GestureAdapter Derrive from this if you only want to implement a subset of `GestureListener`.
public static interface	GestureDetector.GestureListener Register an instance of this class with a `GestureDetector` to receive gestures such as taps, long presses, flings, panning or pinch zooming.
pack-priv static class	GestureDetector.VelocityTracker

Field Summary

Modifier and Type	Field and Description
private final Vector2	initialPointer1
private final Vector2	initialPointer2
private boolean	inTapRectangle
private int	lastTapButton
private int	lastTapPointer
private long	lastTapTime
private float	lastTapX
private float	lastTapY
pack-priv final GestureDetector.GestureListener	listener
pack-priv boolean	longPressFired
private float	longPressSeconds
private final Timer.Task	longPressTask
private long	maxFlingDelay
private boolean	panning
private boolean	pinching
pack-priv Vector2	pointer1
private final Vector2	pointer2
private int	tapCount
private long	tapCountInterval
private float	tapRectangleCenterX
private float	tapRectangleCenterY
private float	tapRectangleHeight
private float	tapRectangleWidth
private long	touchDownTime
private final GestureDetector.VelocityTracker	tracker

Constructor Summary

Access	Constructor and Description
public	GestureDetector(GestureDetector.GestureListener listener) Creates a new GestureDetector with default values: halfTapSquareSize=20, tapCountInterval=0.4f, longPressDuration=1.1f, maxFlingDelay=Integer.MAX_VALUE.
public	GestureDetector(float half width in pixels of the square around an initial touch event, see `GestureListener#tap(float, float, int, int)`. halfTapSquareSize, float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps. tapCountInterval, float time in seconds that must pass for the detector to fire a `GestureListener#longPress(float, float)` event. longPressDuration, float no fling event is fired when the time in seconds the finger was dragged is larger than this, see `GestureListener#fling(float, float, int)` maxFlingDelay, GestureDetector.GestureListener listener)
public	GestureDetector(float half width in pixels of the rectangle around an initial touch event, see `GestureListener#tap(float, float, int, int)`. halfTapRectangleWidth, float half height in pixels of the rectangle around an initial touch event, see `GestureListener#tap(float, float, int, int)`. halfTapRectangleHeight, float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps. tapCountInterval, float time in seconds that must pass for the detector to fire a `GestureListener#longPress(float, float)` event. longPressDuration, float no fling event is fired when the time in seconds the finger was dragged is larger than this, see `GestureListener#fling(float, float, int)` maxFlingDelay, GestureDetector.GestureListener listener)

Method Summary

Modifier and Type	Method and Description
public void	cancel() No further gesture events will be triggered for the current touch, if any.
public void	invalidateTapSquare() The tap square will no longer be used for the current touch.
public boolean	isLongPressed() Returns: whether the user touched the screen long enough to trigger a long press event.
public boolean	isLongPressed(float duration) Returns: whether the user touched the screen for as much or more than the given duration.
public boolean	isPanning()
private boolean	isWithinTapRectangle(float x, float y, float centerX, float centerY)
public void	reset()
public void	setLongPressSeconds(float longPressSeconds)
public void	setMaxFlingDelay(long maxFlingDelay)
public void	setTapCountInterval(float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps. tapCountInterval)
public void	setTapRectangleSize(float halfTapRectangleWidth, float halfTapRectangleHeight)
public void	setTapSquareSize(float halfTapSquareSize)
public boolean	touchCancelled(int screenX, int screenY, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchCancelled. Implements com.badlogic.gdx.InputProcessor.touchCancelled. Called when the touch gesture is cancelled.
public boolean	touchDown(int x, int y, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchDown. Implements com.badlogic.gdx.InputProcessor.touchDown. Called when the screen was touched or a mouse button was pressed.
public boolean	touchDown(float x, float y, int pointer, int button)
public boolean	touchDragged(int x, int y, int pointer) Overrides com.badlogic.gdx.InputAdapter.touchDragged. Implements com.badlogic.gdx.InputProcessor.touchDragged. Called when a finger or the mouse was dragged.
public boolean	touchDragged(float x, float y, int pointer)
public boolean	touchUp(int x, int y, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchUp. Implements com.badlogic.gdx.InputProcessor.touchUp. Called when a finger was lifted or a mouse button was released.
public boolean	touchUp(float x, float y, int pointer, int button)

Inherited from com.badlogic.gdx.InputAdapter:: keyDown keyTyped keyUp mouseMoved scrolled

Field Detail

initialPointer1	back to summary
private final Vector2 initialPointer1

initialPointer2	back to summary
private final Vector2 initialPointer2

inTapRectangle	back to summary
private boolean inTapRectangle

lastTapButton	back to summary
private int lastTapButton

lastTapPointer	back to summary
private int lastTapPointer

lastTapTime	back to summary
private long lastTapTime

lastTapX	back to summary
private float lastTapX

lastTapY	back to summary
private float lastTapY

listener	back to summary
pack-priv final GestureDetector.GestureListener listener

longPressFired	back to summary
pack-priv boolean longPressFired

longPressSeconds	back to summary
private float longPressSeconds

longPressTask	back to summary
private final Timer.Task longPressTask

maxFlingDelay	back to summary
private long maxFlingDelay

panning	back to summary
private boolean panning

pinching	back to summary
private boolean pinching

pointer1	back to summary
pack-priv Vector2 pointer1

pointer2	back to summary
private final Vector2 pointer2

tapCount	back to summary
private int tapCount

tapCountInterval	back to summary
private long tapCountInterval

tapRectangleCenterX	back to summary
private float tapRectangleCenterX

tapRectangleCenterY	back to summary
private float tapRectangleCenterY

tapRectangleHeight	back to summary
private float tapRectangleHeight

tapRectangleWidth	back to summary
private float tapRectangleWidth

touchDownTime	back to summary
private long touchDownTime

tracker	back to summary
private final GestureDetector.VelocityTracker tracker

Constructor Detail

GestureDetector	back to summary
public GestureDetector(GestureDetector.GestureListener listener) Creates a new GestureDetector with default values: halfTapSquareSize=20, tapCountInterval=0.4f, longPressDuration=1.1f, maxFlingDelay=Integer.MAX_VALUE.

GestureDetector back to summary

GestureDetector	back to summary
public GestureDetector(float halfTapSquareSize, float tapCountInterval, float longPressDuration, float maxFlingDelay, GestureDetector.GestureListener listener) Parameters halfTapSquareSize:float half width in pixels of the square around an initial touch event, see `GestureListener#tap(float, float, int, int)`. tapCountInterval:float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps. longPressDuration:float time in seconds that must pass for the detector to fire a `GestureListener#longPress(float, float)` event. maxFlingDelay:float no fling event is fired when the time in seconds the finger was dragged is larger than this, see `GestureListener#fling(float, float, int)`

public GestureDetector(float halfTapSquareSize, float tapCountInterval, float longPressDuration, float maxFlingDelay, GestureDetector.GestureListener listener)

Parameters

halfTapSquareSize:float: half width in pixels of the square around an initial touch event, see GestureListener#tap(float, float, int, int).
tapCountInterval:float: time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps.
longPressDuration:float: time in seconds that must pass for the detector to fire a GestureListener#longPress(float, float) event.
maxFlingDelay:float: no fling event is fired when the time in seconds the finger was dragged is larger than this, see GestureListener#fling(float, float, int)

GestureDetector back to summary

GestureDetector	back to summary
public GestureDetector(float halfTapRectangleWidth, float halfTapRectangleHeight, float tapCountInterval, float longPressDuration, float maxFlingDelay, GestureDetector.GestureListener listener) Parameters halfTapRectangleWidth:float half width in pixels of the rectangle around an initial touch event, see `GestureListener#tap(float, float, int, int)`. halfTapRectangleHeight:float half height in pixels of the rectangle around an initial touch event, see `GestureListener#tap(float, float, int, int)`. tapCountInterval:float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps. longPressDuration:float time in seconds that must pass for the detector to fire a `GestureListener#longPress(float, float)` event. maxFlingDelay:float no fling event is fired when the time in seconds the finger was dragged is larger than this, see `GestureListener#fling(float, float, int)`

public GestureDetector(float halfTapRectangleWidth, float halfTapRectangleHeight, float tapCountInterval, float longPressDuration, float maxFlingDelay, GestureDetector.GestureListener listener)

Parameters

halfTapRectangleWidth:float: half width in pixels of the rectangle around an initial touch event, see GestureListener#tap(float, float, int, int).
halfTapRectangleHeight:float: half height in pixels of the rectangle around an initial touch event, see GestureListener#tap(float, float, int, int).
tapCountInterval:float: time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps.
longPressDuration:float: time in seconds that must pass for the detector to fire a GestureListener#longPress(float, float) event.
maxFlingDelay:float: no fling event is fired when the time in seconds the finger was dragged is larger than this, see GestureListener#fling(float, float, int)

Method Detail

cancel	back to summary
public void cancel() No further gesture events will be triggered for the current touch, if any.

invalidateTapSquare	back to summary
public void invalidateTapSquare() The tap square will no longer be used for the current touch.

isLongPressed	back to summary
public boolean isLongPressed() Returns:boolean whether the user touched the screen long enough to trigger a long press event.

isLongPressed	back to summary
public boolean isLongPressed(float duration) Returns:boolean whether the user touched the screen for as much or more than the given duration.

isPanning	back to summary
public boolean isPanning()

isWithinTapRectangle	back to summary
private boolean isWithinTapRectangle(float x, float y, float centerX, float centerY)

reset	back to summary
public void reset()

setLongPressSeconds	back to summary
public void setLongPressSeconds(float longPressSeconds)

setMaxFlingDelay	back to summary
public void setMaxFlingDelay(long maxFlingDelay)

setTapCountInterval	back to summary
public void setTapCountInterval(float tapCountInterval) Parameters tapCountInterval:float time in seconds that must pass for two touch down/up sequences to be detected as consecutive taps.

setTapRectangleSize	back to summary
public void setTapRectangleSize(float halfTapRectangleWidth, float halfTapRectangleHeight)

setTapSquareSize	back to summary
public void setTapSquareSize(float halfTapSquareSize)

touchCancelled back to summary

touchCancelled	back to summary
public boolean touchCancelled(int screenX, int screenY, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchCancelled. Implements com.badlogic.gdx.InputProcessor.touchCancelled. Doc from com.badlogic.gdx.InputProcessor.touchCancelled. Called when the touch gesture is cancelled. Reason may be from OS interruption to touch becoming a large surface such as the user cheek). Relevant on Android and iOS only. The button parameter will be `Buttons#LEFT` on iOS. Annotations @Override

public boolean touchCancelled(int screenX, int screenY, int pointer, int button)

Overrides com.badlogic.gdx.InputAdapter.touchCancelled.

Implements com.badlogic.gdx.InputProcessor.touchCancelled.

Doc from com.badlogic.gdx.InputProcessor.touchCancelled.

Called when the touch gesture is cancelled. Reason may be from OS interruption to touch becoming a large surface such as the user cheek). Relevant on Android and iOS only. The button parameter will be Buttons#LEFT on iOS.

Annotations

@Override

touchDown back to summary

touchDown	back to summary
public boolean touchDown(int x, int y, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchDown. Implements com.badlogic.gdx.InputProcessor.touchDown. Doc from com.badlogic.gdx.InputProcessor.touchDown. Called when the screen was touched or a mouse button was pressed. The button parameter will be `Buttons#LEFT` on iOS. Annotations @Override

public boolean touchDown(int x, int y, int pointer, int button)

Overrides com.badlogic.gdx.InputAdapter.touchDown.

Implements com.badlogic.gdx.InputProcessor.touchDown.

Doc from com.badlogic.gdx.InputProcessor.touchDown.

Called when the screen was touched or a mouse button was pressed. The button parameter will be Buttons#LEFT on iOS.

Annotations

@Override

touchDown	back to summary
public boolean touchDown(float x, float y, int pointer, int button)

touchDragged	back to summary
public boolean touchDragged(int x, int y, int pointer) Overrides com.badlogic.gdx.InputAdapter.touchDragged. Implements com.badlogic.gdx.InputProcessor.touchDragged. Doc from com.badlogic.gdx.InputProcessor.touchDragged. Called when a finger or the mouse was dragged. Annotations @Override

touchDragged

back to summary

public boolean touchDragged(int x, int y, int pointer)

Overrides com.badlogic.gdx.InputAdapter.touchDragged.

Implements com.badlogic.gdx.InputProcessor.touchDragged.

Doc from com.badlogic.gdx.InputProcessor.touchDragged.

Called when a finger or the mouse was dragged.

Annotations

@Override

touchDragged	back to summary
public boolean touchDragged(float x, float y, int pointer)

touchUp back to summary

touchUp	back to summary
public boolean touchUp(int x, int y, int pointer, int button) Overrides com.badlogic.gdx.InputAdapter.touchUp. Implements com.badlogic.gdx.InputProcessor.touchUp. Doc from com.badlogic.gdx.InputProcessor.touchUp. Called when a finger was lifted or a mouse button was released. The button parameter will be `Buttons#LEFT` on iOS. Annotations @Override

public boolean touchUp(int x, int y, int pointer, int button)

Overrides com.badlogic.gdx.InputAdapter.touchUp.

Implements com.badlogic.gdx.InputProcessor.touchUp.

Doc from com.badlogic.gdx.InputProcessor.touchUp.

Called when a finger was lifted or a mouse button was released. The button parameter will be Buttons#LEFT on iOS.

Annotations

@Override

touchUp	back to summary
public boolean touchUp(float x, float y, int pointer, int button)

com.badlogic.gdx.input back to summary

public Class GestureDetector.GestureAdapter

Class Inheritance

extends Object
implements GestureListener

java.lang.Object
com.badlogic.gdx.input.GestureDetector.GestureAdapter

All Implemented Interfaces

com.badlogic.gdx.input.GestureDetector.GestureListener

Known Direct Subclasses

com.badlogic.gdx.graphics.g3d.utils.CameraInputController.CameraGestureListener

Derrive from this if you only want to implement a subset of GestureListener.

Author: mzechner

Constructor Summary

Access	Constructor and Description
public	GestureAdapter()

Method Summary

Modifier and Type	Method and Description
public boolean	fling(float velocityX, float velocityY, int button) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.fling. Called when the user dragged a finger over the screen and lifted it.
public boolean	longPress(float x, float y) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.longPress.
public boolean	pan(float x, float y, float deltaX, float deltaY) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pan. Called when the user drags a finger over the screen.
public boolean	panStop(float x, float y, int pointer, int button) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.panStop. Called when no longer panning.
public boolean	pinch(Vector2 initialPointer1, Vector2 initialPointer2, Vector2 pointer1, Vector2 pointer2) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pinch. Called when a user performs a pinch zoom gesture.
public void	pinchStop() Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pinchStop. Called when no longer pinching.
public boolean	tap(float x, float y, int count, int button) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.tap. Called when a tap occured.
public boolean	touchDown(float x, float y, int pointer, int button) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.touchDown.
public boolean	zoom(float initialDistance, float distance) Implements com.badlogic.gdx.input.GestureDetector.GestureListener.zoom. Called when the user performs a pinch zoom gesture.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Constructor Detail

GestureAdapter	back to summary
public GestureAdapter()

Method Detail

fling

back to summary

public boolean fling(float velocityX, float velocityY, int button)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.fling.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.fling.

Called when the user dragged a finger over the screen and lifted it. Reports the last known velocity of the finger in pixels per second.

Annotations

@Override

longPress

back to summary

public boolean longPress(float x, float y)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.longPress.

Annotations

@Override

pan

back to summary

public boolean pan(float x, float y, float deltaX, float deltaY)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pan.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.pan.

Called when the user drags a finger over the screen.

Annotations

@Override

panStop

back to summary

public boolean panStop(float x, float y, int pointer, int button)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.panStop.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.panStop.

Called when no longer panning.

Annotations

@Override

pinch

back to summary

public boolean pinch(Vector2 initialPointer1, Vector2 initialPointer2, Vector2 pointer1, Vector2 pointer2)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pinch.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.pinch.

Called when a user performs a pinch zoom gesture. Reports the initial positions of the two involved fingers and their current positions.

Annotations

@Override

pinchStop

back to summary

public void pinchStop()

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.pinchStop.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.pinchStop.

Called when no longer pinching.

Annotations

@Override

tap back to summary

public boolean tap(float x, float y, int count, int button)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.tap.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.tap.

Called when a tap occured. A tap happens if a touch went down on the screen and was lifted again without moving outside of the tap square. The tap square is a rectangular area around the initial touch position as specified on construction time of the GestureDetector.

Annotations

@Override

touchDown

back to summary

public boolean touchDown(float x, float y, int pointer, int button)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.touchDown.

Annotations

@Override

zoom

back to summary

public boolean zoom(float initialDistance, float distance)

Implements com.badlogic.gdx.input.GestureDetector.GestureListener.zoom.

Doc from com.badlogic.gdx.input.GestureDetector.GestureListener.zoom.

Called when the user performs a pinch zoom gesture. The original distance is the distance in pixels when the gesture started.

Annotations

@Override

com.badlogic.gdx.input back to summary

public Interface GestureDetector.GestureListener

Known Direct Implementers: com.badlogic.gdx.input.GestureDetector.GestureAdapter

Register an instance of this class with a GestureDetector to receive gestures such as taps, long presses, flings, panning or pinch zooming. Each method returns a boolean indicating if the event should be handed to the next listener (false to hand it to the next listener, true otherwise).

Author: mzechner

Method Summary

Modifier and Type	Method and Description
public boolean	fling(float velocity on x in seconds velocityX, float velocity on y in seconds velocityY, int button) Called when the user dragged a finger over the screen and lifted it.
public boolean	longPress(float x, float y)
public boolean	pan(float x, float y, float the difference in pixels to the last drag event on x. deltaX, float the difference in pixels to the last drag event on y. deltaY) Called when the user drags a finger over the screen.
public boolean	panStop(float x, float y, int pointer, int button) Called when no longer panning.
public boolean	pinch(Vector2 initialPointer1, Vector2 initialPointer2, Vector2 pointer1, Vector2 pointer2) Called when a user performs a pinch zoom gesture.
public void	pinchStop() Called when no longer pinching.
public boolean	tap(float x, float y, int the number of taps. count, int button) Called when a tap occured.
public boolean	touchDown(float x, float y, int pointer, int button)
public boolean	zoom(float distance between fingers when the gesture started. initialDistance, float current distance between fingers. distance) Called when the user performs a pinch zoom gesture.

Method Detail

fling

back to summary

public boolean fling(float velocityX, float velocityY, int button)

Called when the user dragged a finger over the screen and lifted it. Reports the last known velocity of the finger in pixels per second.

Parameters

velocityX:float: velocity on x in seconds
velocityY:float: velocity on y in seconds

longPress	back to summary
public boolean longPress(float x, float y)

pan

back to summary

public boolean pan(float x, float y, float deltaX, float deltaY)

Called when the user drags a finger over the screen.

Parameters

deltaX:float: the difference in pixels to the last drag event on x.
deltaY:float: the difference in pixels to the last drag event on y.

panStop	back to summary
public boolean panStop(float x, float y, int pointer, int button) Called when no longer panning.

pinch	back to summary
public boolean pinch(Vector2 initialPointer1, Vector2 initialPointer2, Vector2 pointer1, Vector2 pointer2) Called when a user performs a pinch zoom gesture. Reports the initial positions of the two involved fingers and their current positions.

pinchStop	back to summary
public void pinchStop() Called when no longer pinching.

tap back to summary

public boolean tap(float x, float y, int count, int button)

Parameters

count:int: the number of taps.

touchDown	back to summary
public boolean touchDown(float x, float y, int pointer, int button) See Also `InputProcessor#touchDown(int, int, int, int)`

zoom

back to summary

public boolean zoom(float initialDistance, float distance)

Called when the user performs a pinch zoom gesture. The original distance is the distance in pixels when the gesture started.

Parameters

initialDistance:float: distance between fingers when the gesture started.
distance:float: current distance between fingers.

com.badlogic.gdx.input back to summary

pack-priv Class GestureDetector.VelocityTracker

Class Inheritance

extends Object

java.lang.Object
com.badlogic.gdx.input.GestureDetector.VelocityTracker

Field Summary

Modifier and Type	Field and Description
pack-priv float	deltaX
pack-priv float	deltaY
pack-priv long	lastTime
pack-priv float	lastX
pack-priv float	lastY
pack-priv long[]	meanTime
pack-priv float[]	meanX
pack-priv float[]	meanY
pack-priv int	numSamples
pack-priv int	sampleSize

Constructor Summary

Access	Constructor and Description
pack-priv	VelocityTracker()

Method Summary

Modifier and Type	Method and Description
private float	getAverage(float[] values, int numSamples)
private long	getAverage(long[] values, int numSamples)
private float	getSum(float[] values, int numSamples)
public float	getVelocityX()
public float	getVelocityY()
public void	start(float x, float y, long timeStamp)
public void	update(float x, float y, long currTime)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

deltaX	back to summary
pack-priv float deltaX

deltaY	back to summary
pack-priv float deltaY

lastTime	back to summary
pack-priv long lastTime

lastX	back to summary
pack-priv float lastX

lastY	back to summary
pack-priv float lastY

meanTime	back to summary
pack-priv long[] meanTime

meanX	back to summary
pack-priv float[] meanX

meanY	back to summary
pack-priv float[] meanY

numSamples	back to summary
pack-priv int numSamples

sampleSize	back to summary
pack-priv int sampleSize

Constructor Detail

VelocityTracker	back to summary
pack-priv VelocityTracker()

Method Detail

getAverage	back to summary
private float getAverage(float[] values, int numSamples)

getAverage	back to summary
private long getAverage(long[] values, int numSamples)

getSum	back to summary
private float getSum(float[] values, int numSamples)

getVelocityX	back to summary
public float getVelocityX()

getVelocityY	back to summary
public float getVelocityY()

start	back to summary
public void start(float x, float y, long timeStamp)

update	back to summary
public void update(float x, float y, long currTime)

public Class GestureDetector

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

public Class GestureDetector.GestureAdapter

Constructor Summary

Method Summary

Constructor Detail

Method Detail

public Interface GestureDetector.GestureListener

Method Summary

Method Detail

pack-priv Class GestureDetector.VelocityTracker

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail